Dilator



April 26, 1927. 1,625,905

H. w. NAYLOR DILATOR Filed April 23. 1926 H. .I4/l 475012 Patented Apr. 26, 1927, i 1,525,965

UNITED STATES PATENT OFFICE.

HOWARD w. NAYLOR, or Monais, NEW YORK.

DILATOR.

Application filed April 23, 1926. Serial No. 104,125.

This invention relates to veterinary dias most clearly shown in Figure 2 of' the laters and more particularly to a dilater for drawings, and at the time these strands are cows teats, the dilator being intended prinunited to each other by twisting, short tibercipallyior employment in the treatment oi strands, indicated by the numeral 2, are

5 teats haring obstructions or those which are applied between the wires and are secured ou bruised and sore,`teats affected with the disin place by the twist formed in the wire ease known as spider teats and teats which strands.l The liber strands 2 extend throughby reason of some peculiarity are hard to out the entire length of the twisted wire milk, strands which constitute the stein l of the io One of the objectsot' the present invention dilater and it will be evident by reference 07 is to provide a teat dilatorwhich may be to the drawings, that in this manner, the readily inserted into theniilk duct of the stem of the dilator is provided with a soft teat and readily removed therefrom withabsorbent covering of fibrous material for out inconvenience to the animal and which Contact with the walls of the milk duct into l5 when once inserted, will be retained in place. which the dilator is to be inserted, so that T0 Another object of the invention is to prono portion of the metal stem will come in vide a dilator which will possess a soft sur- Contact with the said walls of the duct. tace and which will, therefore, be non-irri- In order that the dilator may be conventating andwhich is of such character as to iently manipulated and likewise in Order 2o adapt the dilater to serve likewise the purto prevent its entering the milk duct to such pose oi an applicator for medicaments posdistance that its extraction would be diiisessing, for example, antiseptic and healing Cult, the liber covered stem at one end is properties,` bent to .approximately circular form so as Another object of the invention is t-o proto provide a finger piece 3 which is, of

25 vide a dilator so formed as to adapt it to COu1'Se, 0f greater dimensions than the stein R0 be readily inserted into the milk duct of itself, the finger piece being adapted to be a cows teat which requires dilation and the grasped between the thumb and foreiinger invention contemplates providing the dilater in inserting the dilator into the milk duct with means whereby it may be conveniently 0f. the teat to be dilated and treated. At

3o manipulated at the time it is inserted and this' point it will be evident that when the 85 which means will als() insure against, en dllzltOl iS inserted lIiO the milk duct, the trance of the dilater into the duct beyond head 011 finger piece 3 will engage against the distance required to effect the desired th@ end 0f the teat S0 that the extent to results so that there is no likelihood of the which the dilator enters the milk duct is dilator entering the milk duct to a point limited. 90

where it could not be conveniently extracted. III Order t0 provide for more ready in- Another objectof the invention is to prosertion of the dilator into the milk duct of Vide a dlator 0f the, dass referred t0 which the teat and likewise completely cover the will be Capable of retaining a suitable meeiids of the twisted wire strands comprising #il dicainent so that it will likewise serve the the stem of the dilater, so that they cannot o5 purpose of an applicator. c afuse injury to the wall of the duct, a quan- In the accompanying drawings: tlty of wax or other similar material is ap- `Figure l is a perspective View of the diplied to the terminal portion of the dilator lator embodying the invention. and pressure is exerted against opposite 45 Figure 2 is a detail view partly in elevasides of this portion and the dilator is ro- 100 tion and illustrating the lower portion of tailed So as to compact the projecting ends of the dilator with a portion of the stem exthe fibrous strands 2 and thus provide ai posed to illustrate the construction thereof. smooth entering tip indicated by the numeral Figure 3 is a view similar to Figure 2, 4, of slightly less diameter than the stem- L illustrating the upper or tip end of the of the dilater including the said brous 105 dilater. strands.

The dilater comprises a stem which is In preparing the dilator for use, it is iin` indicated by the numeral 1 and which is mei-sed in a solution possessing antiseptic preferably formed from two strands of wire properties and until the fibrous strands 2 which are twisted together in spiral form have become saturated, whereupon it is reno moved" from the solution -and i. permitted to dry and then packed in any; suitable healing and soothing medicament which may, for eX- ample, be in the nature ofa. salve, and is then ready to be inserted at any time, tip end first, into the milk duct ot' the teat to be dilated and treated, and permitted to remain in place for any suitable period of: time.

In practice, a considerable quantity of the tibrous strands 2 i will f `berarranged between the inter-twisted wire strands comprising the stem of the dilator so that `no portion ot the stem can come in contact with the Wall of the milk duct into which the dilator=is inserted and, likewise, so that the'dilator willpossess a softiand yieldable surface, thereby avoidinir further irritation ofthe milk duct,`

The tip 4, being of less diameter than the body of the dilator.l will provide for more ready .insertion of. the dilator into the milk ductand `due to the application of awaxy material thereto, it will `present a smooth sur i'ace to be rendered-slippery upon contact with the {iuidpresent in the duct and, theretore, `materially facilitate the `insertion oi the dilator without the necessity Lof'applying any appreciable torce or twisting or turning thesame at the time `of insertionw Having' thus described the invention, what I claim isz f i o l. A dilator comprising a stem having a coveringof fiber strands projecting radially therefrom. t

2.. A dilatorLconsisting'of"astern comprising wire Astrands intertwisted throughout their length, and fiber strands interposed i betweenthe wire strands and coniined at their intermediate portions therebyfthefend 4portions of the fiber strands projecting radially from the stem whereby stem. ;y i i* A dilator comprising a stein having a covering of fiber strands, the fiber strands at one end' ot' the Astein being constricted and bonded bv a binder medium to provide a tip.

4. A dilator comprising a stem having a covering-otber *stra-nds, the fiber strands at one end of the stem being constricted and bondedbyfa waxy binder medium to provide a tip of less diameter than the body portion of the dilator. I'

54Af dila'tor comprising a'stem` having a coveringf of' fberstrands, said stein at one endbeing bentupon itself to provide a portion constituting y'a ringer-"piece and also a stop to `limit the insertion of the dilater into a duct. l`

GVA. dilatorcoinprising aeteni 'having a covering of fiber str`ands,tl1e"tiber strands at one end of the stem being constricted and bonded by a`waxy binder medium to `provide a smoothftip,ithesaid steirnat` its' other end beingprovided with a finger-piece.

7. A dilatorcomprisingr astein consisting' of` a pairfof: inter-twistedV vire strands,` and iiber strands interposed betweeirand confined at theirintermediate'fportionsby andi between i thewsaid strands and `having their end portionsprojectingfradially rwith relation to the` atrisiofrthestem, the said projecting end portions of the fiber strands at oneend` ofthe stem being twisted rcircumferentially about the `stein and "constructed by a Wzriy binder medium to provide ai tip of less diameter than the bodyiof the dilator." ifi i In testimony whereoil I aiiin my signature.

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to entirely cover said 

